Allow API functions and events to have entries in _api_features.json

chrome/test/data/extensions/api_test/content_scripts/extension_iframe/iframe.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Simple success test: we want content-script APIs to be available (like
 // sendRequest), but other APIs to be undefined or throw exceptions on access.
 
-function runsWithException(f) {
-  try {
-    var foo = f();
-    console.log('Error: ' + f + '" doesn\'t throw exception.');
-    return false;
-  } catch (e) {
-    if (e.message.indexOf(' can only be used in extension processes.') > -1) {
-      return true;
-    } else {
-      console.log('Error: incorrect exception message: ' + e.message);
-      return false;
-    }
-  }
-}
-
 var success = true;
 
 // The whole of chrome.storage (arbitrary unprivileged) is unavailable.
 if (chrome.storage) {
   console.log('Error: chrome.storage exists, it shouldn\'t.');
   success = false;
 }
 
 // Ditto chrome.tabs, though it's special because it's a dependency of the
 // partially unprivileged chrome.extension.
 if (chrome.tabs) {
   console.log('Error: chrome.tabs exists, it shouldn\'t.');
   success = false;
 }
 
 // Parts of chrome.extension are unavailable.
-if (!runsWithException(function() { return chrome.extension.getViews; }))
+if (typeof(chrome.extension.getViews) != 'undefined')
   success = false;
 
 chrome.extension.sendRequest({success: success});